TORONTO - Detectable levels of a large number of environmental chemicals have been found in the cord blood of some newborns, raising concerns that Canadian children already carry toxins in their bodies at birth, a report says.

The report by Environmental Defence released Wednesday suggests babies are exposed to chemicals in the womb because pollutants are so pervasive both in the environment and in widely used consumer products.

"This is evidence that our babies — who are extremely vulnerable — are being burdened with a toxic chemical load before they are born," said Maggie MacDonald, the organization's toxics program manager.

Because a growing fetus is going through rapid cell division, exposure to chemicals is particularly worrisome, since some compounds mimic the effects of hormones that help drive development of the brain, organs and other tissues of the body, the group said.

Environmental Defence tested the umbilical cord blood of three anonymous newborns in Toronto and Hamilton, finding a total of 137 chemicals overall. The number of toxins in each baby's cord blood ranged from 55 to 121.

Among them were flame retardants, PCBs, PFCs found in non-stick coatings, and organochlorine pesticides.

Many of the chemicals are linked to serious health conditions: 132 are reported to cause cancer in humans or animals; 110 are considered toxic to the brain and nervous system; and 133 cause developmental and reproductive problems in mammals, the group said.

Although the sample of three newborns is extremely small, the findings are consistent with cord blood studies done elsewhere, including in the United States, said acting executive director Sarah Winterton.

While the cord blood toxins were found at low levels, "it's important to specify that these chemicals were detected," she said.

"One of the big ones are flame retardants, which show up in a lot of products because we have laws about ensuring that couches and curtains and pillows and things like that aren't going to ignite or become a conduit for increasing a fire," Winterton said.

"But what we found was these chemicals showed up in the umbilical cord blood, which means that mothers in their environment are being exposed and ingesting the chemicals."

Also of concern was the presence of perfluorinated compounds, or PFCs, so-called chemicals of convenience that are used in non-stick coatings in frying pans and other cookware, as well as in some apparel to make it resistant to stains.

"They're marketed as helping a consumer to benefit their lives, to make it easier," she said. "But in fact, they're chemicals that do migrate from the clothes or the cookware that you may be using into food or through your skin and you're looking at absorbing them."

Environmental Defence also screened for 209 different PCBs, or polychlorinated biphenyls, and found 96 overall in the babies' cord blood.

PCBs, which have been linked to cancers in both animals and humans, were banned in Canada in 1977. Many organochlorine pesticides, including DDT, have also been banned for decades.

"What this shows is that once chemicals get out into the environment, they persist," said Winterton. "And banning them doesn't mean they're necessarily going to go away."

That's why environmental groups want the federal government to take a precautionary approach and not allow chemicals to be used in industry or products until they are proven to be safe.

Environmental Defence is calling on Health Canada and industry to remove harmful chemicals from products.

The federal department is in the process of reviewing thousands of chemicals in consumer products, said Winterton.

"We're asking them to keep on with the work and to set firm timelines when a chemical is proven to be unsafe and should be banned.

"We want these timelines to be shortened and adhered to. We want better labelling so that people can make better choices."

Doug Haines, director of the department's Chemicals Surveillance Bureau, said the Environmental Defence study is consistent with work being done by federal scientists and academics since the 1990s to better understand what chemicals Canadians are being exposed to and their possible risks to health.

The government's Chemicals Management Plan is assessing tens of thousands of compounds, and has accelerated efforts to evaluate the more "nasty" chemicals as a priority, Haines said from Ottawa.

Despite being outlawed in Canada, toxins such as organochlorine pesticides are still used in some countries and circulate globally, accumulating in our environment and passing up the food chain, he said. Heavy metals like mercury also persist, finding their way into certain kinds of fish consumed by people.

"One thing you have to underscore is although the risk from the presence of these ... detected either in cord blood or adult's blood, just because it's found in people does not necessarily mean there will be a health outcome to that one individual person," Haines said.

"Nonetheless ... the long-term work we have been doing on those chemicals is to reduce the (exposure of) the Canadian population to those chemicals."

Winterton said Canadians, especially pregnant women, can reduce their exposure to pollutants by frequent removal of house dust, which absorbs chemicals; choosing personal-care products such as shampoo, makeup and creams without toxic ingredients; and avoiding houseware products and apparel that incorporate "convenience" chemicals.

"This can make a difference," she said.

———

Online:

Tips for reducing chemical exposure: www.environmentaldefence.ca

Pre-Polluted: A Report on Toxic Substances in the Umbilical Cord Blood of Canadian Newborns: www.environmentaldefence.ca/prepolluted.

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From rat (and bug) poisons to sprays that keep lawns lush and crop yields high, "pesticides" include hundreds of chemicals. Some interfere with animals' nervous systems; others disrupt hormones, causing abnormal growth that kills the plant or animal. Thus, it's not surprising that synthetic pesticide exposure is linked with diseases of the nervous system and problems with cell growth, including reproductive problems and some cancers.
What You Can Do to Avoid Pesticides:
Start a kitchen garden! It's easy to grow your own herbs and worth doing: a 2011 report revealed that cilantro is often laced with pesticide residues.
Buy organic fruits and vegetables, particularly those with the highest pesticide residues, such as apples, celery and strawberries. (Find out which 12 foods you should buy organic or see the full list at foodnews.org.)
Consider a water filter certified by the Water Quality Association (wqa.org) or NSF International (nsf.org) to screen out pesticides from farms and golf courses that can leach into well water. (Even tap water may contain traces of unregulated pesticides.)
Remove your shoes when you enter your home, and ask guests to do the same to avoid tracking in pesticides sprayed on lawns.
Limit lawn chemicals, insecticides and rodenticides. Find natural ways to eliminate pests.

"Dioxins" are a family of chemicals (including some polychlorinated biphenyls, or PCBs) with known cancer-causing properties. Dioxins are by-products of combustion--released via industrial processes, volcanoes, forest fires, even backyard burn piles -- widespread in the environment but in low levels. They take years to degrade and they accumulate in fat -- so they concentrate up the food chain. More than 90 percent of our exposure to dioxins is through food, mostly meat, dairy, fish and shellfish.
What You Can Do to Avoid Dioxins and PCBs:
Trim fat from meats; opt for low-fat dairy products.
Select lower-fat sources of protein, including meat from grass-fed animals, which tends to be leaner than meat from animals raised on grains.
Eat a balanced diet with plenty of fruit, vegetables and grains to avoid too much exposure from any given source (e.g., meat, dairy).

This group of chemicals is used to make soft, squishy plastics, such as rubber duckies, medical tubing and polyvinyl chloride, a.k.a. PVC. Some phthalates are used to make synthetic fragrances last longer. Research suggests that phthalates act as endocrine disruptors, interfering with the body's hormone systems and potentially leading to reproductive abnormalities, problems with fertility and increased risk for diabetes.
What You Can Do to Go Phthalate-Free:
Choose personal-care products (e.g., shampoos, lotions) and household cleaners free of synthetic fragrance, which often includes phthalates. Opt for those scented with essential oils or nothing at all. "Fragrance-free" or "unscented" on the front of a product sometimes means that the final product doesn't have an odor; fragrance may have been added to mask another smell. Scan the ingredient list if there is one; if fragrance is listed, it's often synthetic. (Some manufacturers of safe natural products list natural fragrances this way, too, so if you're in doubt, contact the company for more information.)
Make the bulk of your diet minimally processed fresh foods. Processing and packaging can introduce phthalates into your food.

Research has suggested that 98 percent of Americans contain trace levels of PFCs (perfluorocarbons), chemicals that are used to repel water, grease and stains and are found in nonstick cookware, clothing, carpeting, furniture and food containers. Our bodies absorb PFCs through food, our skin and via fumes from overheated pans. They're linked with liver damage, developmental problems, cancer and, according to one 2011 study in the Journal of Clinical Endocrinology Metabolism, early menopause.
What You Can Do to Avoid PFCs:
Opt for cast-iron (including ceramic-coated) or stainless-steel pots and pans. Find out three health reasons to cook with cast iron.
When using nonstick cookware, do not cook over high heat and do use wooden or other nonmetal utensils to prevent scratches.
Look for clothing made from recycled polyester and polyurethane, which is naturally waterproof, and wax-coated clothes, which repel water and are PFC-free.
Forgo the optional stain treatment on new carpets and fabric-covered furniture.

We drink water to stay hydrated and flush out toxins. But could tap water actually be exposing us to more potentially harmful chemicals? Perhaps. A 2009 analysis by the Environmental Working Group found a whopping 315 pollutants in U.S. tap water, including arsenic (a heavy metal) and pesticides. More than half of the compounds are not regulated by the EPA, which means they can legally be present in tap water in any amount.
For instance, perchlorate -- a currently unregulated chemical (though that's soon to change, the EPA announced in early 2011) that's used to make rocket fuel, flares and explosives -- contaminates the drinking water of up to 26 million Americans. The chemical has been shown to reduce thyroid hormone production; experts worry about the risks it poses particularly to babies and children. According to Elizabeth Pearce, M.D., an endocrinologist at the Boston University School of Medicine:
Potentially even a very mild degree of low thyroid function could have an adverse effect on cognitive outcomes for a fetus. However, no studies to date have shown effects of low-level perchlorate exposure on thyroid function in pregnant women.
In December 2010, the Environmental Working Group also reported finding hexavalent chromium (chromium-6), the "Erin Brockovich" contaminant that the EPA considers "likely to be carcinogenic to humans," in the drinking water of 31 U.S. cities, including Chicago and Los Angeles. In the wake of this report, the EPA is reassessing the "oral reference dose" (or upper limit of what is considered safe), with a final ruling expected by the end of the year.
What You Can Do for Better Water:
Have your water tested -- especially if your water comes from a private well or you live near a plant that might use perchlorate or in an area, like parts of California, where chromium-6 is a known a problem, says Pauli Undesser, M.S., director of regulatory and technical affairs of the Water Quality Association. In fact, says Undesser, it's a good idea for everyone to test their tap water. (Call the EPA's Safe Water Hotline: 800-426-4791 to locate a laboratory. Cost starts around $20.)
Once you know what's in your water -- mercury, lead from piping or even pesticides -- you can choose a filter certified by NSF International or the Water Quality Association to screen specific contaminants. Often, a $20 carbon-based Brita pitcher with a filter will do the trick. Don't assume that bottled water is better: per the FDA, it must meet the same standards as tap.

BPA (bisphenol A) is a chemical traditionally used to make hard, clear plastics -- including food containers, reusable water bottles and some baby bottles -- and the resins lining some food cans. It leaches into food, particularly acidic items, such as tomatoes, or when containers are scratched or heated. Similar in structure to estrogen, BPA is considered a so-called endocrine disruptor. Based on animal and (limited) human studies, scientists are concerned that BPA may be linked with prostate and breast cancer, infertility, heart disease and diabetes.
What You Can Do to Avoid BPA:
Store and reheat food in glass containers.
Drink from reusable water bottles made of glass, stainless steel or BPA-free plastic. If plastic is labeled with a "7" recycling code and not marked BPA-free, it could contain the chemical. (Unless labeled BPA-free, aluminum bottles may be lined with the compound.)
If you use plastic containers, choose BPA-free, don't put them in the microwave and do hand wash them: a 2003 study found that plastic bottles released more BPA after they were cleaned in the dishwasher.
Opt for fresh or frozen fruits and vegetables whenever possible. For things like tuna, beans, broth and diced tomatoes, look for BPA-free packaging. Consider making broth and cooking and freezing beans.
Switch to a pour-over ceramic or glass coffee maker, such as Melitta or Chemex, as electric makers made of plastic can leach BPA.

The most common exposure to mercury -- which is both naturally occurring and man-made -- is from eating contaminated fish. Other sources: compact fluorescent light bulbs (CFLs), silver dental fillings and batteries. In high doses, mercury can harm the nervous system, heart, lungs, kidneys, and immune system; even in low levels it can affect brains of young children, which is why the U.S. Environmental Protection Agency (EPA) and the Food and Drug Administration (FDA) have issued seafood guidelines for children and pregnant/nursing women.
What You Can Do to Avoid Mercury:
Make smart seafood choices. Use Monterey Bay Aquarium's Seafood Watch guides (seafoodwatch.org) to find low-mercury selections. (Generally, smaller fish, such as sardines, have less mercury than larger ones.) Consult fish advisories issued by your local health department. If you're pregnant, nursing or feeding young children, follow the EPA/FDA's guides: avoid swordfish, shark, tilefish and king mackerel; limit albacore tuna to 6 ounces and total seafood to 12 ounces per week.
If you do break a CFL bulb, leave the room for 10 minutes and open a window to let the room air out. To clean it up, brush it into a sealable plastic bag or glass jar with a lid using stiff cardboard and wipe the area with damp paper towels. Don't vacuum, as that could further disperse particles. For perspective, one CFL contains about as much mercury as 47 servings of swordfish. More tips here.
Keep "button batteries" -- used in remote controls and musical cards -- out of kids' reach. They contain a mix of toxic chemicals, including mercury, that, if swallowed, are very harmful.